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Note 4 - Inventories - Components of Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Raw materials $ 47,978 $ 44,697
Work-in-process 5,114 3,018
Finished goods 15,773 10,096
Supplies 2,164 1,840
Total inventories $ 71,029 $ 59,651